listboxex.cpp

用bcg库编写的java IDE 源码

//*-
//
// MODULE NAME:   ListBoxEx.cpp
//
// DESCRIPTION:   CListBoxEx class declaration
//
// AUTHOR     :   Copyright (C) Stefano Passiglia, December 1999
//                [e-mail]
//                You can reuse and redistribute this code, provided this header is
//                kept as is.
//+*/

//
// Include Files
//
#include "stdafx.h"

#include <stdio.h>

#include "InPlaceCtrls.h"
#include "ListboxEx.h"

//#include "BmpData.h" // for bitmap definition

//
// Global variables.
//
static unsigned int const g_DragListMsg = RegisterWindowMessage( DRAGLISTMSGSTRING );
static unsigned int const g_IPCEndEditMsg = RegisterWindowMessage( IPCMSGSTRING );


//
// Local constant definitions.
//
#ifdef _DEBUG
#  define new DEBUG_NEW
#  undef THIS_FILE
   static char THIS_FILE[] = __FILE__;
#endif

//
// Local type definitions.
//
// None.


//
// Local defines
//
#define ALT_KEY_PRESSED( uFlag )  ( (uFlag)&KF_ALTDOWN)

#define LBEX_ID_EDITCONTROL     1
#define LBEX_ID_BUTTONCONTROL   2

#define LBEX_LASTITEM_MAGIC     0x45424558   // 'LBEX'
   

//////////////////////////////////////////////////////////////////////////////
//                                                                          //
//                         CListBoxEx class                                 //
//                                                                          //
//////////////////////////////////////////////////////////////////////////////



               ///////////////////////////////////////////////
               //               Message map                 //
               ///////////////////////////////////////////////



BEGIN_MESSAGE_MAP( CListBoxEx, CDragListBox )
   //{{AFX_MSG_MAP(CListBoxEx)
   ON_WM_CREATE()
   ON_WM_LBUTTONDOWN()
   ON_WM_LBUTTONDBLCLK()
   ON_WM_LBUTTONUP()
   ON_WM_SYSKEYDOWN()
   ON_WM_KEYDOWN()
   //}}AFX_MSG_MAP
   ON_REGISTERED_MESSAGE( g_IPCEndEditMsg, OnEndEditMessage )
END_MESSAGE_MAP()

IMPLEMENT_DYNCREATE( CListBoxEx, CDragListBox )



               ///////////////////////////////////////////////
               //           Constructor/Destructor          //
               ///////////////////////////////////////////////



///*-
// FUNCTION NAME: CListBoxEx::CListBoxEx()
//
// DESCRIPTION:   CListBoxEx class constructor
//
// PARAMETER(S):  None.
//
// RETURN:        None
//
// NOTES:         None
//+*/
CListBoxEx::CListBoxEx()
{
   m_pBuddy = NULL; 

   m_dwEditStyle = LBEX_EDITBUTTON;
   
   m_pEdit = NULL;

   m_iSelected = -1;
   m_iEdited = -1;

   m_bAllowEditing = TRUE;
   m_bAllowDrag = TRUE;
   m_bAddedNullString = FALSE;
   m_nActiveIndex = -1;
   this->m_nNewlyAdded = -1;
   this->m_nNewlyDeleted = -1;
} // CListBoxEx::CListBoxEx



///*-
// FUNCTION NAME: CListBoxEx::~CListBoxEx()
//
// DESCRIPTION:   CListBoxEx class destructor
//
// PARAMETER(S):  None.
//
// RETURN:        None
//
// NOTES:         None
//+*/
CListBoxEx::~CListBoxEx()
{
    if(m_pEdit != NULL&&m_pBrowseButton != NULL)
	{
	  delete m_pEdit;
      delete m_pBrowseButton;
	}
} // CListBoxEx::~CListBoxEx



               ///////////////////////////////////////////////
               //             Initialization                //
               ///////////////////////////////////////////////




///*-
// FUNCTION NAME: CListBoxEx::PreCreateWindow
//
// DESCRIPTION:   Called before the window handle is created
//
// PARAMETER(S):
//                cs:
//                   TYPE:          CREATESTRUCT structure
//                   MODE:          In
//                   MECHANISM:     By reference
//                   DESCRIPTION:   Allows to change window features
//
// RETURN:        Inherited value.
//
// NOTES:         None
//+*/
BOOL CListBoxEx::PreCreateWindow( CREATESTRUCT & cs ) 
{
   // Make sure it has the correct styles
   cs.style |= LBEX_STYLE;
   cs.dwExStyle |= LBEX_EXSTYLE;
   return CWnd::PreCreateWindow(cs);
} // CListBoxEx::PreCreateWindow


///*-
// FUNCTION NAME: CListBoxEx::PreSubclassWindow
//
// DESCRIPTION:   Called before the window handle is attached to a dialog item.
//
// PARAMETER(S):  None.
//
// RETURN:        Inherited value.
//
// NOTES:         None
//+*/
void CListBoxEx::PreSubclassWindow() 
{
   // Make sure it has the correct styles
   ModifyStyle( 0, LBEX_STYLE, SWP_SHOWWINDOW );
   ModifyStyleEx( 0, LBEX_EXSTYLE, SWP_SHOWWINDOW );
   
   CDragListBox::PreSubclassWindow();

   CreateEdit();
} // CListBoxEx::PreSubclassWindow


///*-
// FUNCTION NAME: CListBoxEx::OnCreate
//
// DESCRIPTION:   Called when the window handle is created
//
// PARAMETER(S):
//                lpCreateStruct:
//                   TYPE:          CREATESTRUCT structure
//                   MODE:          In
//                   MECHANISM:     By reference
//                   DESCRIPTION:   Allows to change window features
//
// RETURN:        Inherited value.
//
// NOTES:         None
//+*/
int CListBoxEx::OnCreate( LPCREATESTRUCT lpCreateStruct ) 
{
   if ( CDragListBox::OnCreate(lpCreateStruct) == -1 )
   {
      return -1;
   }
   
   CreateEdit();

   return 0;
} // CListBoxEx::OnCreate


///*-
// FUNCTION NAME: CListBoxEx::CreateEdit
//
// DESCRIPTION:   Creates the edit box
//
// PARAMETER(S):  None.
//
// RETURN:        Inherited value.
//
// NOTES:         None
//+*/
void CListBoxEx::CreateEdit()
{
   // Create an in-place edit box
   if ( m_pEdit == NULL )
   {
      m_pEdit = new CInPlaceEdit;
      m_pEdit->Create( WS_CHILD | WS_BORDER | m_dwEditStyle, 
                       CRect( 0, 0, 0, 0 ), 
                       this, 
                       LBEX_ID_EDITCONTROL );
      m_pEdit->SetFont( GetFont() );

      // Create the browse button
      m_pBrowseButton = new CInPlaceButton;
      m_pBrowseButton->Create( _T("..."),
                               WS_CHILD | BS_PUSHBUTTON,
                               CRect( 0, 0, 0, 0 ),
                               this,
                               LBEX_ID_BUTTONCONTROL );
   }
} // CListBoxEx::CreateEdit()



               ///////////////////////////////////////////////
               //             Draw functions                //
               ///////////////////////////////////////////////



///*-
// FUNCTION NAME: CListBoxEx::MeasureItem
//
// DESCRIPTION:   Called by the framework when a list box 
//                with an owner-draw style is created. 
//
// PARAMETER(S):
//                lpMeasureItemStruct:
//                   TYPE:          MEASUREITEMSTRUCT structure.
//                   MODE:          In
//                   MECHANISM:     By reference
//                   DESCRIPTION:   Used to inform Windows of the list-box dimensions. 
//
// RETURN:        None.
//
// NOTES:         None
//+*/
void CListBoxEx::MeasureItem( LPMEASUREITEMSTRUCT lpMeasureItemStruct )
{
   // Get current font metrics
   TEXTMETRIC metrics;
   HDC dc = ::GetDC( m_hWnd );
   GetTextMetrics( dc, &metrics );
   ::ReleaseDC( m_hWnd, dc );
   
   // Set the height
   lpMeasureItemStruct->itemHeight = metrics.tmHeight + metrics.tmExternalLeading;
} // CListBoxEx::MeasureItem


///*-
// FUNCTION NAME: CListBoxEx::DrawItem
//
// DESCRIPTION:   Called by the framework when a 
//                visual aspect of an owner-draw list box changes.  
//
// PARAMETER(S):
//                lpDrawItemStruct:
//                   TYPE:          DRAWITEMSTRUCT structure.
//                   MODE:          In
//                   MECHANISM:     By reference
//                   DESCRIPTION:   Contains information about the type of drawing required. 
//
// RETURN:        None.
//
// NOTES:         None
//+*/
void CListBoxEx::DrawItem( LPDRAWITEMSTRUCT lpDrawItemStruct )
{
   // If there are no list box items, skip this message. 
   if ( lpDrawItemStruct->itemID == -1 )
   { 
      return; 
   } 
   
   CString  strItemText;
   CRect    rcText( lpDrawItemStruct->rcItem );

   COLORREF clrItemText,
            clrOldTextColor;

   // Put a bit of room to the left of the text
   rcText.left += 8;

   // Act upon the item state
   switch ( lpDrawItemStruct->itemAction )
   { 
      case ODA_SELECT: 
      case ODA_DRAWENTIRE: 
      
         // Is the item selected? 
         if ( lpDrawItemStruct->itemState & ODS_SELECTED ) 
         { 
            clrItemText = GetSysColor( COLOR_HIGHLIGHTTEXT );
            // Clear the rectangle
            FillRect(  lpDrawItemStruct->hDC, 
                      &lpDrawItemStruct->rcItem, 
                       (HBRUSH)(COLOR_ACTIVECAPTION+1) );
         } 
         else
         { 
            clrItemText = GetSysColor( COLOR_WINDOWTEXT );
            // Clear the rectangle
            FillRect(  lpDrawItemStruct->hDC, 
                      &lpDrawItemStruct->rcItem, 
                       (HBRUSH)(COLOR_WINDOW+1) );
         } 

         clrOldTextColor = SetTextColor( lpDrawItemStruct->hDC,
                                         clrItemText );
         SetBkMode( lpDrawItemStruct->hDC,
                    TRANSPARENT );

         // Display the text associated with the item. 
         if ( lpDrawItemStruct->itemData != LBEX_LASTITEM_MAGIC )
         {
            GetText( lpDrawItemStruct->itemID,
                     strItemText );
            DrawText(  lpDrawItemStruct->hDC,
                       LPCTSTR( strItemText ),
                       strItemText.GetLength(),
                      &rcText,
                       DT_SINGLELINE | DT_VCENTER );
         }
         else
         {
            DrawText(  lpDrawItemStruct->hDC,
                       "--- Last Item",
                       strItemText.GetLength(),
                      &rcText,
                       DT_SINGLELINE | DT_VCENTER );
         }
         // Is the item selected? 
         if ( lpDrawItemStruct->itemState & ODS_SELECTED ) 
         { 
            SetTextColor( lpDrawItemStruct->hDC,
                          clrOldTextColor );
            DrawFocusRect(  lpDrawItemStruct->hDC, 
                           &lpDrawItemStruct->rcItem ); 
         } 

         break; 
   }
} // CListBoxEx::DrawItem


///*-
// FUNCTION NAME: CListBoxEx::DrawSeparator
//
// DESCRIPTION:   Draws the insertion guide before the 
//                item with the indicated index. 
//
// PARAMETER(S):
//                nIndex:
//                   TYPE:          int.
//                   MODE:          In
//                   MECHANISM:     By value
//                   DESCRIPTION:   Zero-based index of the insertion point. 
//
// RETURN:        None.
//
// NOTES:         Copied from the MFC implementation, with some changes.
//+*/
void CListBoxEx::DrawSeparator( int nIndex )
{
   if ( nIndex == -1 )
   {
      return;
   }

   CBrush* pBrush = CDC::GetHalftoneBrush();
   
   CRect rect;
   GetClientRect(&rect);
   
   CRgn rgn;
   rgn.CreateRectRgnIndirect( &rect );
   
   CDC* pDC = GetDC();
   
   // Prevent drawing outside of listbox
   // This can happen at the top of the listbox since the listbox's DC is the
   // parent's DC
   pDC->SelectClipRgn( &rgn );
   
   GetItemRect( nIndex, &rect );
   rect.bottom = rect.top+2;
   rect.top -= 2;
   rect.left += 5;
   rect.right -= 5;
   CBrush* pBrushOld = pDC->SelectObject(pBrush);

   // Draw main line
   pDC->PatBlt( rect.left, rect.top, rect.Width(), rect.Height(), PATINVERT );
   
   // Draw vertical lines
   pDC->PatBlt( rect.left-3, rect.top-4, 3, rect.Height()+8, PATINVERT );
   pDC->PatBlt( rect.right, rect.top-4, 3, rect.Height()+8, PATINVERT );
   
   pDC->SelectObject( pBrushOld );
   ReleaseDC( pDC );
} // CListBoxEx::DrawSeparator


///*-
// FUNCTION NAME: CListBoxEx::DrawInsert
//
// DESCRIPTION:   Called to draw the insertion guide before the 
//                item with the indicated index. 
//
// PARAMETER(S):
//                nIndex:
//                   TYPE:          int.
//                   MODE:          In
//                   MECHANISM:     By value
//                   DESCRIPTION:   Zero-based index of the insertion point. 
//
// RETURN:        None.
//
// NOTES:         Copied from the MFC implementation.
//+*/
void CListBoxEx::DrawInsert( int nIndex )
{
   if ( m_nLast != nIndex )
   {
      DrawSeparator( m_nLast );
      DrawSeparator( nIndex );
   }
   // Set last selected
   m_nLast = nIndex;
} // CDragListBox::DrawInsert



               ///////////////////////////////////////////////
               //                 Messages                  //
               ///////////////////////////////////////////////



///*-
// FUNCTION NAME: CListBoxEx::OnChildNotify
//
// DESCRIPTION:   Called by this window抯 parent window when it receives a